<template>
  <div class="icons">
    <swiper :options="swiperOption">
      <swiper-slide v-for="(page, index) of pages" :key="index">
        <div class="icon" v-for="item of page" :key="item.id">
          <div class="icon-img">
            <img class="icon-img-content" :src="item.imgUrl">
          </div>
          <p class="icon-desc">{{item.desc}}</p>
        </div>
      </swiper-slide>
    </swiper>
  </div>
</template>
<script>
  export default {
    data() {
      return {
        /*iconList: [{
          id: '0001',
          imgUrl: '//s.qunarzz.com/homenode/images/touchheader/hotel.png',
          desc: '酒店'
        }, {
          id: '0002',
          imgUrl: '//s.qunarzz.com/homenode/images/touchheader/flight.png',
          desc: '机票'
        }, {
          id: '0003',
          imgUrl: '//s.qunarzz.com/homenode/images/touchheader/train.png',
          desc: '火车票'
        }, {
          id: '0004',
          imgUrl: '//s.qunarzz.com/homenode/images/touchheader/package.png',
          desc: '度假'
        }, {
          id: '0005',
          imgUrl: '//s.qunarzz.com/homenode/images/touchheader/piao.png',
          desc: '景点门票'
        }, {
          id: '0006',
          imgUrl: '//s.qunarzz.com/homenode/images/touchheader/hotel.png',
          desc: '酒店'
        }, {
          id: '0007',
          imgUrl: '//s.qunarzz.com/homenode/images/touchheader/flight.png',
          desc: '机票'
        }, {
          id: '0008',
          imgUrl: '//s.qunarzz.com/homenode/images/touchheader/train.png',
          desc: '火车票'
        }, {
          id: '0009',
          imgUrl: '//s.qunarzz.com/homenode/images/touchheader/train.png',
          desc: '火车票'
        }],*/
        swiperOption: {
          loop: false
        }
      }
    },
    props: {
      iconList: {
        type: Array,
        default: []
      }
    },
    computed: {
      pages () {
        const pages = []
        this.iconList.forEach((item, index) => {
          const page = Math.floor(index / 8)
          /* 如果pages[page]不存在 */
          if (!pages[page]) {
            pages[page] = []
          }
          pages[page].push(item)
        })
        return pages
      }
    }
  }
</script>

<style scoped lang="stylus">
  @import '~styles/varibles.styl'
  @import '~styles/mixins.styl'
  .icons >>> .swiper-container
    height: 0
    padding-bottom: 50%
  .icons
    margin-top: .1rem
    .icon
      position: relative
      overflow: hidden
      width: 25%
      height: 0
      float: left
      padding-bottom: 25%
      .icon-img
        position: absolute
        top: 0
        left: 0
        right: 0
        bottom: .44rem
        box-sizing: border-box
        padding: .1rem
        .icon-img-content
          display: block
          margin: 0 auto
          height: 100%
      .icon-desc
        position: absolute
        left: 0
        right: 0
        bottom: 0
        height: .44rem
        color: $darkTextColor
        line-height: .44rem
        text-align: center
        ellipsis()
</style>
